Deltares/fews-web-oc
Nov 2024 – Oct 2025
8 Months active
Languages Used
JavaScriptTypeScriptVueCSSHTMLVue.jsGLSLShell
Technical Skills
API IntegrationComponent DesignComponent DevelopmentError HandlingFront-end DevelopmentFrontend Development
Cees Voesenek
PROFILE
Cees Voesenek
Cees Voesenek contributed to Deltares/fews-web-oc by engineering advanced data visualization and workflow features for hydrological dashboards. He modularized WebGL-based visualizers into reusable libraries, refactored time series data handling for reliability, and enhanced user interfaces with robust search, scheduling, and aggregation options. Using TypeScript, Vue.js, and JavaScript, Cees improved performance through optimized data fetching, chart thinning, and precise state management. His work included integrating backend APIs, strengthening type safety, and streamlining component design, resulting in maintainable, scalable code. The depth of his contributions is reflected in improved user experience, maintainability, and the foundation for future cross-project visualization reuse.
Overall Statistics
Feature vs Bugs
72%Features
Repository Contributions
85Total
Bugs
12
Commits
85
Features
31
Lines of code
5,928
Activity Months8
Your Network
16 peopleSame Organization
@vortech.nl4
Work History
October 2025
3 Commits • 2 Features
Oct 1, 2025Monthly performance summary for 2025-10 focusing on delivering reliability-enhancing WMS enhancements and aggregation capabilities in Deltares/fews-web-oc. Implemented WMS/PI request handling enhancements by centralizing WMS max-values time series in SpatialDisplayComponent and updating FEWS request dependencies; added AggregationPanel to support accumulation options for WMS layers, integrated into layer options and image source requests to visualize accumulated values. These changes improve reliability, prepare for future aggregation, and enable richer visualization for decision-makers. Key commits demonstrate cross-cutting improvements in frontend architecture and data flow.
3 Commits • 2 Features
Oct 1, 2025Monthly performance summary for 2025-10 focusing on delivering reliability-enhancing WMS enhancements and aggregation capabilities in Deltares/fews-web-oc. Implemented WMS/PI request handling enhancements by centralizing WMS max-values time series in SpatialDisplayComponent and updating FEWS request dependencies; added AggregationPanel to support accumulation options for WMS layers, integrated into layer options and image source requests to visualize accumulated values. These changes improve reliability, prepare for future aggregation, and enable richer visualization for decision-makers. Key commits demonstrate cross-cutting improvements in frontend architecture and data flow.
October 2025
June 2025
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for Deltares/fews-web-oc. Focused on delivering frontend visualization improvements, asset cleanup, and stability fixes to support scalable user experiences and lower maintenance costs. Highlights include significant visualization upgrades, asset rationalization, and integration of external bug fixes to improve interaction quality across charts.
June 2025
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for Deltares/fews-web-oc. Focused on delivering frontend visualization improvements, asset cleanup, and stability fixes to support scalable user experiences and lower maintenance costs. Highlights include significant visualization upgrades, asset rationalization, and integration of external bug fixes to improve interaction quality across charts.
May 2025
23 Commits • 7 Features
May 1, 2025May 2025: Deltares/fews-web-oc delivered significant reliability, performance, and maintainability improvements for time series visualization. Key work included refactoring the time series data path, enabling separate data fetches for table and chart, introducing robust error handling, and hardening chart/table interactions (thinning, panning, axis/domain handling). The month also strengthened code quality with typing improvements and dead code removal, resulting in faster, more predictable data rendering and improved user experience for time series dashboards.
23 Commits • 7 Features
May 1, 2025May 2025: Deltares/fews-web-oc delivered significant reliability, performance, and maintainability improvements for time series visualization. Key work included refactoring the time series data path, enabling separate data fetches for table and chart, introducing robust error handling, and hardening chart/table interactions (thinning, panning, axis/domain handling). The month also strengthened code quality with typing improvements and dead code removal, resulting in faster, more predictable data rendering and improved user experience for time series dashboards.
May 2025
April 2025
8 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for Deltares/fews-web-oc: Delivered a set of targeted visualization and data reliability improvements that enhance user experience, stability, and performance in the Web OC dashboard. The work focused on advanced wave crest visualization, WebGL streamline rendering, and robust time-series data handling.
April 2025
8 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for Deltares/fews-web-oc: Delivered a set of targeted visualization and data reliability improvements that enhance user experience, stability, and performance in the Web OC dashboard. The work focused on advanced wave crest visualization, WebGL streamline rendering, and robust time-series data handling.
February 2025
9 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for Deltares/fews-web-oc: Delivered user-facing search enhancements, fixed rendering and data precision issues, and improved developer tooling, driving value in reliability, performance, and maintainability.
9 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for Deltares/fews-web-oc: Delivered user-facing search enhancements, fixed rendering and data precision issues, and improved developer tooling, driving value in reliability, performance, and maintainability.
February 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for Deltares/fews-web-oc. Focused on improving maintainability and reuse of visualization components by modularizing the WebGL Visualizer into an external library. Key changes included extracting rendering logic, updating imports to use the new library, and establishing clean API boundaries for future reuse. No major bugs fixed this month. Overall impact: foundation for cross-project reuse, easier testing, and faster iteration on rendering features. Technologies demonstrated: JavaScript/TypeScript, WebGL, modular architecture, library packaging, and clear dependency boundaries.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for Deltares/fews-web-oc. Focused on improving maintainability and reuse of visualization components by modularizing the WebGL Visualizer into an external library. Key changes included extracting rendering logic, updating imports to use the new library, and establishing clean API boundaries for future reuse. No major bugs fixed this month. Overall impact: foundation for cross-project reuse, easier testing, and faster iteration on rendering features. Technologies demonstrated: JavaScript/TypeScript, WebGL, modular architecture, library packaging, and clear dependency boundaries.
December 2024
24 Commits • 9 Features
Dec 1, 2024Deltares/fews-web-oc – December 2024: Delivered a strong set of performance, reliability, and UX improvements across the animated vector workflow. Key features include WMS data fetch optimization for animated vectors with 2x downsampling, a major code architecture refactor that moves shared utilities to a library and introduces a form-schema composable, and comprehensive Workflow Form/UI enhancements with strong typing and improved user experience. Additional maintenance work improves stability and readability (HTML cleanup, deduplication, and removal of deprecated emits).
24 Commits • 9 Features
Dec 1, 2024Deltares/fews-web-oc – December 2024: Delivered a strong set of performance, reliability, and UX improvements across the animated vector workflow. Key features include WMS data fetch optimization for animated vectors with 2x downsampling, a major code architecture refactor that moves shared utilities to a library and introduces a form-schema composable, and comprehensive Workflow Form/UI enhancements with strong typing and improved user experience. Additional maintenance work improves stability and readability (HTML cleanup, deduplication, and removal of deprecated emits).
December 2024
November 2024
13 Commits • 5 Features
Nov 1, 2024Month: 2024-11 — Deltares/fews-web-oc Key features delivered: - Task Submission UI Enhancements: improved submission flow with description field, 'Approve immediately' option, and submission status feedback; added workflow scenario name field. (Commits: 4d823a80..., 28f155b0..., 31a1da77...) - Workflow Runtime Display Enhancements: switched runtime to a single, backend-backed value with human-friendly formatting. (Commits: 00cd8af9..., bf9f7c59..., 38c02886...) - RunTask Scheduling and DateTime Input: added start-time parameter (t0) and DateTimeField component for scheduling input. (Commits: 08091a56..., 3dceb623...) - Spatial Visualization Enhancement: prioritized animated streamlines for storytelling in visuals. (Commit: 97eeeebf...) - Workflow Store Type Safety and Cleanup: enum-based ProcessData, stronger typing, cleanup; includes TODO for future refinement. (Commits: cf88217b..., f779a88a..., 192f3a5f..., 823a076d...) Major bugs fixed: - Runtime display consistency: replaced range with a single value and ensured backend fetch for reliability. - Type-safety and stability: added missing types, converted to enums, fixed throw statements to prevent runtime errors. - Scheduling input validation: resolved issues around t0 handling and DateTimeField integration. Overall impact and accomplishments: - Streamlined task submission and scheduling, clearer runtime visibility, and stronger data integrity. These changes reduce troubleshooting time, accelerate task throughput, and improve maintainability for future work. Technologies/skills demonstrated: - Frontend React/TypeScript enhancements, backend data integration for runtime, robust typing with enums, DateTime handling, and enhanced data visualization with animated streamlines.
November 2024
13 Commits • 5 Features
Nov 1, 2024Month: 2024-11 — Deltares/fews-web-oc Key features delivered: - Task Submission UI Enhancements: improved submission flow with description field, 'Approve immediately' option, and submission status feedback; added workflow scenario name field. (Commits: 4d823a80..., 28f155b0..., 31a1da77...) - Workflow Runtime Display Enhancements: switched runtime to a single, backend-backed value with human-friendly formatting. (Commits: 00cd8af9..., bf9f7c59..., 38c02886...) - RunTask Scheduling and DateTime Input: added start-time parameter (t0) and DateTimeField component for scheduling input. (Commits: 08091a56..., 3dceb623...) - Spatial Visualization Enhancement: prioritized animated streamlines for storytelling in visuals. (Commit: 97eeeebf...) - Workflow Store Type Safety and Cleanup: enum-based ProcessData, stronger typing, cleanup; includes TODO for future refinement. (Commits: cf88217b..., f779a88a..., 192f3a5f..., 823a076d...) Major bugs fixed: - Runtime display consistency: replaced range with a single value and ensured backend fetch for reliability. - Type-safety and stability: added missing types, converted to enums, fixed throw statements to prevent runtime errors. - Scheduling input validation: resolved issues around t0 handling and DateTimeField integration. Overall impact and accomplishments: - Streamlined task submission and scheduling, clearer runtime visibility, and stronger data integrity. These changes reduce troubleshooting time, accelerate task throughput, and improve maintainability for future work. Technologies/skills demonstrated: - Frontend React/TypeScript enhancements, backend data integration for runtime, robust typing with enums, DateTime handling, and enhanced data visualization with animated streamlines.
Activity
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Quality Metrics
Correctness88.8%
Maintainability89.2%
Architecture85.8%
Performance82.4%
AI Usage20.2%
Skills & Technologies
Programming Languages
CSSGLSLHTMLJavaScriptShellTypeScriptVueVue.jsYAML
Technical Skills
API IntegrationAutomationCI/CDCSS StylingChart InteractionChart LibrariesChart.jsCode FormattingCode RefactoringComponent DesignComponent DevelopmentComposable FunctionsData FetchingData VisualizationDate Manipulation
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